drewSS06

ok guys i figured this would be a good question for you... i got a 06 SS/NA and the tranny is grinding from 1st gear to 2nd. i have heard that it could be the clutch or the syncros but im not sure i took it to a mechanic but i think they are just tryin to get more money out of me. what do you think it could be? and do you think the redline tranny fluid would help? and the last one is that the clutch you offer on the website (Exedy 2.4L Single Sport Clutch) would it compatible with the 06? even though its for the 07 and up?

appreciate the help guys